/*
 * Tencent is pleased to support the open source community by making polaris-java available.
 *
 * Copyright (C) 2021 Tencent. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package com.tencent.polaris.encrypt.util;

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * SHA-256摘要算法
 *
 * @author hongweizhu
 */
public class SHA256 {

    /**
     * 计算SHA-256摘要
     *
     * @param content 原文
     * @return 摘要
     * @throws NoSuchAlgorithmException 算法不存在时抛出
     */
    public static byte[] encode(String content) throws NoSuchAlgorithmException {
        MessageDigest digester = MessageDigest.getInstance("SHA-256");
        digester.update(content.getBytes(StandardCharsets.UTF_8));
        return digester.digest();
    }
}
